Compensating mechanism



March 31, 1931. R, 1 WILCOX 1,798,919

COMPENSATING MECHANT SM Filed May 25, 1927 'lill/711111111110110 OOJIII'CIMIO p n? i- Il O il lNvENToR Imm, l Pic/mrd Lester h/'lca' l l\l om@ q O2 O @w A To NEX Patented Mar. 31, 1931 .RICHARD LESTER WILCOX,OF WATERBURY, CONNECTICUT, ASSIGNOR IO THE WATERBURY FARREL FOUNDRY ANI)MACHINE COMPA NECTICUT, A CORPORATION 0F CONNECTICUT ooMrENsA'rmeMECHANISM Application filed May 23, 1927. Serial No. 193,650.

This invention relates to compensating mechanism, particularly asapplied to heading or upsetting machines, although not limited thereto.It is the object of the invention, among other things to provide asimple and effective device of this character which will `insure thefull stroke of the punch slide at the variable limits of its stroke"without adjustment of the parts from which it derives its power, andfurther, to provide in its structure a certain definite part that willbreak, if the punch slide, for any reason is held in a locked position,when under normal conditions it should be free to move.

With these, and other `objects `in view,` as will more fully appear, theinvention consists of certain features of novel construction, andarrangement of parts as described and illustrated in the accompanyingdrawings, and particularly pointed out in the claims, it beingunderstood, however, that within the scope of what is claimed, changesin Jform, proportion, size and details of construction may be madewithout departing from the spirit or `modifying any of the ad-` vantagesof the invention.

Referring to the drawings in which like' numerals designate, like parts"inthe several figures. Y

Figure 1 is a side elevation of a portion of i a header or upsettingmachine with my new and improved mechanism associated therewith' y y CFigure 2 is a fragmentary transverse sectional view thereof, takengenerally upon line 2-2 of Figure p "A heading, upsetting machine orthelike tacts with' a part 19 or the like and thus limits NY, 0FWATERBURY,` CON- the down position of the punch slide, and the i l,posite sides of the headthereoit and fixed in the punch slide, and amovable locking bolt also having angular faces upon opposite sides ofits outer end. This locking bolt actuated by mechanisms (not shown)`toward and away from the punch slide rides either on the top of or inunderneath the locking stud 49 thus locking the `punch slide eitheragainst the stopV screw 17 or the nuts 16 in its down or up positionsrespectively.`

Movement of the punch slide 12 relatively to the gate 10 is derived fromthe rock shaft 20 j ournaled in the body member 11 or other part andhaving an operative connection with the foot plate 21 connected with theslide and the cradle 22.` y

The mechanism above described is old in the art and with the exceptionof the operative connection between the rock shaft and part of mypresent mechanism located between the source of power (rock shaft) andthe punch slide for imparting relative movement to the punch slide onthe gate, whereby, irrespective of the length or position of the strokeof the punch slide, the mechanism will operate and adjust itselfautomatically to such differences in stroke; and further, it perchancethe punch i slide should be in any one of its :locked posiico tions, andthus held against movement, my improved mechanism will eitheraccommodate itself to these new conditions, or a readily replaceablepart will break without causing injury or damage to other more costlyand not so readily replaceable parts.

In the drawings, 23 designates the shaft journaled in the body member ofthe machine or other parts, having th-ereon a journal block 24, which isslidable between the walls of the slot 25 in the connection arm 26. Thisarm derives lengthwise movement from a cam 27 on the rock shaft 23,through a roll 28 journaled on the stud 29 fixed in said arm. Fixed onthe rock shaft 20 is an arm 30 having therein stop screws 3l which arelocked in their adjusted positions by the nuts 32. Journaled on the rockshaft 20. adjacent to the arm 30, is the rock member 33 having a radialslot 34 therein, and provided at one end with a head 35, and at theother end with a vbase portion 36, having the pockets 37 and lugs 38,through the latter of which are the screws Projecting through the slot34,-is a stud 40, upon which is journaled the bushing 4l fixed in theyokeend 42 of the connection arm 26, with nuts 43 and 44 upon oppositeends thereof. The position of this stud 40 toward and away from the rockshaft 2O is determined by the sleeve 45 threaded into the rock member 33with its inner' end impinging against the stud 40 and the lock screw 46rotatable therein and threaded intoV the stud 40. By manipulation of thesleeve 45 and lock screw 46 the stud 40 can not only be moved toward andaway from the rock shaft but can be securely locked in any of suchadjusted positions. Upon opposite sides of the-center of the rock shaft20 are the two pairs of flat flexible plates 47 the lower end of eachpair projecting into one of the pockets 37. The screws' 31 contact withthe inner of these plates 47 near the outer end, and near the lower endthereof the screws 39 contact with the outer of these plates. Varyingtensions of the plates 47 are derived from the screws 39. When themechanism is in its normal position the tension of the plates 47 isagainst the head 35 and there is a slight clearance between the screws31 and the inner of the two plates 47 so that one set of the plates isnot counteracting the opposite set. Vhile I have illustrated theseplates as being arranged in pairs, a single plate, or more than two ineach set.` may be substituted for those shown. Lateral movement of theplates relatively to the rock member 33 is prevented by the lugs 48 onthe head 35. Y

In operation. motion is transmitted to the rock shaft 20 from the shaft23 through the connection arm 26, which imparts a rocking movement tothe member 33 and through the plates 47 to the arm 30.

The position of the stud 40 is such as to impart approximately such arocking movement to the rock member 33 as will give the requisitereciprocatory movement to the punch slide l2 on the gate 10. Thisadjustment, however, is only approximate and if there is still motionleft in the connection arm 26 after either one of the extreme movementsof the slide 12 has been reached, then such excess movement irs absorbedbythe yielding plates 47, the' plates upon onel side of the rock member33 yielding at the limit of one movement of the stroke of the punchslide and the plates upon the opposite side yielding at the oppositelimit.

If any of the mechanism that imparts reciprocatory movement to the gateshould break or become disarranged in its parts, such contingency andothers, may prevent the disengagement of the punch slide lockingmechanism. Thus, the punch slide will be held against relative movementin the gate. In such case, the mechanism for reciprocating the slide.relatively would ordinarily break. `With' my device, however, in s uchcontingency, the flexible plates 47 will be-4 called upon to yieldconsiderably more than normally yand perhaps sufficiently to permit theoperation of the connection arm 26 without imparting movement to thepunch slide l2. If, however, the plates should not yield sufficientlyfor this purpose, one set would break, thus permitting the operation ofthe connection arm 26 and associated parts withoutimparting movement tothe slide 12.

The plates 47 are comparatively inexpensive andreplacement' ofy one ormore thereof, if broken, will restore the mechanism to its normalcondition with the minimum expenditure of time and labor.

What I claim as new is l l. In a mechanism of the character described, ashaft, anV arm yonv said shaft, a rock member journaled on the shafthaving a head formed with recessed lugs upon each side thereof and afoot having pockets therein, a yielding member on each side of said rockmemberhaving an end received in one of said pockets and having itsoppositeA end slidably projecting through one of the recessed lugs andengaging vsaid arm, and means for actuating said rock member.

2. In a mechanism of the character described, a shaft, a. radiallyprojecting arm carried by said shaft, a rock member journaled on saidshaft adjacent the arm, said rock member havin-g a foot formed with apair of spaced pockets, and a head formed with a pair of spacedopenings, a pair of spring members, each of said spring members havingan end receivedV in one ofsaid pockets and having its opposite endVprojecting through and beyond an opening in the head and engaging saidarm, and means for actuating the rock member.

3. In an operating mechanism .for punch slides, a shaft, an arm on saidshat, a rock member journaled on the shaft having a head and a foot, ayielding member on each side of said rock member having an end engagedwith the arm and adapted to break upon jamming of the punch slide orlocking thereof against movement, means carried by the head for slidablyengaging each member between the ends of the latter, means to adjustablyconnect each member to the foot, and means to actuate said rock member.

4. In an operating mechanism for punch slides, a. shaft, an arm on saidshaft, a rock member journaled on the shaft and having a head and a footdisposed on opposite sides of the shaft, resilient means on each side ofthe rock member said resilient means being adapted to break upon jammingof the punch slide or locking thereof against movement, adjustable meanscarried by the arm on each side thereof and engaged with the adjacentends of the resilient means, means to guide Jthe resilient means :fromthe head, means to adj ustably connect the resilient means to the foot,and means for actuating said rock inember.

In testimony whereof, I have hereunto affixed my signature.

RICHARD LESTER WILCOX.

